EP 1437840 A3 20040721 - Submarine cable branching unit
Title (en)
Submarine cable branching unit
Title (de)
Unterseekabelverzweigungseinheit
Title (fr)
Unité de branchement de câble sous-marin
Publication
Application
Priority
GB 0229980 A 20021221
Abstract (en)
[origin: EP1437840A2] System and method for re-routing internal power for reducing voltage requirements of a submarine transmission system. A power supply supplies power to a bridge rectifier circuit (10) the latter biasing a plurality of Zener diodes (11; 12; 13; 14; 15; 16) which are connected in parallel arrangement with respective optical amplifiers (21; 22; 23; 24; 25; 26). The bridge rectifier circuit (10) is arranged such that a first predetermined number of Zener diodes (23; 24; 25; 26) are biased in forward bias direction thus operating as normal diodes with a low voltage drop, whereas a second predetermined number of Zener diodes (21; 22) are biased in reverse or powering direction thus powering respective optical amplifiers. <IMAGE>
IPC 1-7
IPC 8 full level
H04B 10/80 (2013.01); H04B 3/44 (2006.01); H04B 10/291 (2013.01)
CPC (source: EP US)
H04B 3/44 (2013.01 - EP US)
Citation (search report)
- [X] US 5517383 A 19960514 - WEBB STEPHEN M [GB]
- [A] PATENT ABSTRACTS OF JAPAN vol. 0100, no. 65 (E - 388) 14 March 1986 (1986-03-14)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1437840 A2 20040714; EP 1437840 A3 20040721; EP 1437840 B1 20110914; AT E524881 T1 20110915; GB 0229980 D0 20030129; GB 2396499 A 20040623; JP 2004208287 A 20040722; JP 4592279 B2 20101201; US 2004160127 A1 20040819; US 7245046 B2 20070717
DOCDB simple family (application)
EP 03293008 A 20031202; AT 03293008 T 20031202; GB 0229980 A 20021221; JP 2003405811 A 20031204; US 73790203 A 20031218